Thermostat



FIG. 1 is a perspective view of a thermostat;

FIG. 2 is a front elevation view of the thermostat of FIG. 1; and,

FIGS. 3-6 are left, right, top and bottom views, respectively, of thethermostat of FIG. 1.

The portions illustrated in broken lines on the figures depict unclaimedenvironmental subject matter and form no part of the claimed design.

CLAIM The ornamental design for a thermostat, as shown and described.